Portfolio Manager

Better places, thriving communities. Job Overview This role supports the effective management of large energy portfolios, ensuring accurate data, smooth supplier relationships, and excellent customer service. Working within the Portfolio Management team, the successful candidate will manage customer portfolios, handle portfolio queries, oversee reporting and data accuracy, support supplier and meter changes, and provide escalation support. The role requires strong knowledge of energy systems, industry charges, supplier management, reporting, and stakeholder engagement, with a focus on delivering reliable insights and a seamless customer experience.

Main duties

• Lead the day-to-day management of strategic customer energy portfolios, ensuring service excellence and overseeing a team of Portfolio Analysts.
• Maintain accurate customer portfolio data by coordinating estate, site, meter, and supplier changes across internal systems.
• Manage and resolve customer queries, data requests, and escalations, ensuring timely responses and high levels of customer satisfaction.
• Oversee the production and delivery of contractual reports, providing accurate insights and supporting customers with energy spend management.
• Build strong customer relationships through regular calls, meetings, and stakeholder engagement, coordinating internal teams to deliver effective solutions.

Requirements

• Proven track record of building and maintaining long-term customer relationships through excellent stakeholder management and customer service.
• Strong knowledge of UK energy markets, including transmission and distribution frameworks, renewable energy policies, and industry support mechanisms.
• Excellent communication and presentation skills, with the ability to convey complex technical information clearly to senior stakeholders.
• Highly organised with strong analytical, problem-solving, and project management skills, capable of managing multiple priorities and tight deadlines.
• Advanced Microsoft Office skills (Excel, Word, PowerPoint, and Access) with the ability to apply strategic tools and data analysis to complex business challenges.

The successful candidate will be based in London, Northampton or another Mitie office, but also be expected to attend meetings at customer sites from time to time. Flexible working from home is available 2-3 days per week at management's discretion.

Our market-leading offering provides you with benefits that suit your lifestyle.

We have a virtual GP on hand for you and members of your household. So you can get expert advice by video or phone without having to leave your home. We offer financial wellbeing assistance through our Salary Finance scheme. For example, you could access 50% of your earned pay before payday for a small fee. Salary Finance also offers competitive loans.

When you join us, we’ll give you a link to our flexible lifestyle benefits platform, Choices. You might choose to purchase up to five extra days’ holiday each year. You might buy critical illness insurance, seek dental treatment or buy technology products at an affordable cost. There are many choices!

We give you access to high street discounts from thousands of well-known retailers, gyms and more through our MiDeals platform. And we have a cycle-to-work scheme. Life cover of up to four times your salary is available. We also offer enhanced pension contributions, a save-as-you-earn scheme, and a Mitie Matching Share Plan (you could even be awarded free shares in Mitie).

We award our employees with Mitie Stars as recognition for their hard work. There are cash prizes up for grabs each month and at the end of the year there’s a chance to scoop a top prize of £10,000!

Our success is a direct result of the experience and quality of our people. Progressing your career is therefore a top priority for us. We offer a diverse variety of training and development avenues via a wide selection of learning resources to suit you.

We are committed to ensuring our recruitment process is inclusive and accessible to all. If you have a disability or long-term condition (for example dyslexia, anxiety, autism, a mobility condition or hearing loss) and need us to make any reasonable adjustments, changes or do anything differently during the recruitment process, please let us know by emailing Cory Ambler at [email protected].

Since 1987, Mitie’s 84,000 employees have been maintaining companies globally. We are the UK’s leading facilities management and professional services company, and our clients range from household names in banking, critical government sites as well as hospitals and schools. Join our Mitie Team. Together our diversity makes us stronger.

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